Slate-pencil sharpener



(No Model.)

H. SCOTT.

SLATE PENCIL SHARPENER.

N0.'328,256. Patented Oct. 13, 1885.

WITNESSES mvm'rona BY ATTORNEYS.

N. PETERS. Pmwumn n m. Washingtom u. z;

UNITE STATES PATENT OFFICE.

HATTIE SCOTT, OF 'DETROIT, MICHIGAN.

SLATE-PENCIL SHARPENER.

ESPECIEICATION forming part of Letters Patent No. 328,256, dated October 13, 1885.

Application filed November 14, 1884. Serial No. 147,947. (No model.)

To all whom it may concern.-

Be it known that I, HATTIE Soo'r'r, of Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Slate-Pencil Sharpener, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved machine for sharpening slatepencils rapidly, which machine is simple in construction, strong, and durable.

The invention consists of the combination of parts and their construction, substantially as hereinafter fully set forth, and pointed out in the claim.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both figures.

Figure 1 is a side view of my improved slatepencil sharpener. Fig. 2 is a cross-sectional view of the same on the line a: 00, Fig. 1.

On a base, A, two uprights, B, are secured, between which a grindstone, (J, emery-wheel, or other abrading-disk is pivoted.

On the shaft of the grindstone a pinion D, is rigidly mounted, which engages with a cogwheel, E, pivoted on one of the uprights B, and provided with a handle, F, for turning.

The lower part of the grindstone dips intoa cup, G, placed on the base A between the uprights, and containing water for wetting the stone, thus preventing the stone from wearing off too rapidly, and also preventing the particles of slate ground from the pencil by the stone from spreading.

On that upright B opposite the one on which the wheel E is pivoted a guard or rest, H, is arranged, which has a curved top edge slightly above the rim of the stone provided with the series of notches J.

The pencils are placed in the notches J, the points resting on the rim of the grindstone or emery-wheel, which is revolved very rapidly by means of the cog-wheel E and pinion D, and grinds off the points of the pencil. The pencils placed in the notches J can easily be held in their proper place, and there is no need of exerting undue pressure to hold them in place.

Having thus described my invention, what I 5 claim as new, and desire to secure by Letters Patent, is

In a pencil-sharpener,the combination,with an abrading-disk mounted on a frame, of gearing for revolving the said disk, and a support formed on the frame adjacent to the disk. which support has at its top a curved line and provided with a number of notches for receiving the pencils, substantially as herein shown and described.

HATTIE SCOTT.

Witnesses:

A. P. FUNNELLE, F. M. WYLES. 

